Kev piav qhia ntxaws ntawm Photovoltaic Grid-Connected Inverter Parameters

Cia peb coj Sungrow's SG30T-CN Inverter ua piv txwv.

Piv txwv li: SG30T-CN inverter

SG: sawv cev rau Sunshine inverter khoom kab;

T: Peb sawv cev rau peb theem inverter

30: sawv cev rau inverter tso zis zog ntawm 30kW;

CN: sawv cev rau Suav version.

Qhov no yog hais txog qhov siab tshaj plaws voltage tso cai rau nkag mus rau lub inverter, uas yog, qhov sib npaug ntawm qhov qhib-circuit voltages ntawm tag nrho cov vaj huam sib luag hauv ib txoj hlua tsis tuaj yeem tshaj qhov nqi no.

Piv txwv li, rau Sungrow's SG30T-CN inverter, xav txog qhov ntsuas kub tsis zoo ntawm qhov qhib hluav taws xob hluav taws xob ntawm cov khoom nyob rau hauv huab cua txias (qhov qhib hluav taws xob hluav taws xob nce raws li qhov ntsuas kub qis), qhov qhib hluav taws xob ntawm ib txoj hlua tsis tuaj yeem. Tshaj qhov siab tshaj plaws input voltage ntawm lub inverter, 1100V.

Qhov dav MPPT voltage ntau tuaj yeem ua tiav lub zog ua ntej thaum sawv ntxov thiab ntau lub zog hluav taws xob tom qab hnub poob. Thaum lub MPPT voltage ntawm txoj hlua mus txog lub inverter MPPT voltage ntau (xws li qhov voltage ntau ntawm Sungrow's SG30T-CN yog 160V-1000V), lub inverter tuaj yeem taug qab qhov siab tshaj plaws ntawm cov hlua.

Lus Cim: Qhov zoo tshaj plaws kev khiav hauj lwm voltage ntawm peb-theem inverter yog nyob ib ncig ntawm 620V, thaum lub sij hawm lub inverter muaj lub siab tshaj plaws conversion efficiency. Hauv kev siv tiag tiag, thaum txoj hlua kev khiav hauj lwm qhov hluav taws xob qis dua qhov ntsuas hluav taws xob (620V), lub zog hluav taws xob hluav taws xob pib pib ua haujlwm, uas yuav ua rau qee qhov poob thiab txo qhov ua tau zoo. Yog li, nws raug pom zoo tias MPPT qhov hluav taws xob ntawm txhua txoj hlua ntawm cov khoom siv yog me ntsis siab dua 620V thaum teeb tsa txoj hlua.

4. Tus naj npawb ntawm MPPT txoj kev thiab cov xov tooj ntawm cov hlua ib MPPT cov tswv yim hais txog cov xov tooj ntawm MPPT txoj hauv kev ntawm lub inverter thiab cov xov tooj ntawm cov hlua uas tuaj yeem txuas rau txhua MPPT.

Siv daim duab hauv qab no ua piv txwv:

Muaj 6 DC inputs, uas yog A, B, C, D, E, thiab F. PV1 thiab PV2 sawv cev rau ob lub MPPT inputs. Cov hlua inputs nyob rau hauv ib MPPT yuav tsum sib npaug, thiab cov hlua inputs nyob rau hauv txawv MPPTs yuav tsis sib npaug, uas yog, A=B=CD=E=F, tab sis A tuaj yeem tsis sib npaug rau D.

Qhov siab tshaj plaws tam sim no tso cai rau dhau los ntawm inverter, siab tshaj DC input tam sim no=siab tshaj tawm tam sim no ntawm ib txoj hlua x tus lej ntawm cov hlua.

Inverter AC Output Side Technical Parameters

Nws hais txog lub zog tso zis ntawm lub inverter ntawm qhov ntsuas hluav taws xob thiab tam sim no, uas yog lub zog uas tuaj yeem tso tawm tau ruaj khov rau lub sijhawm ntev.

Lub zog siab tshaj plaws kuj tseem hu ua lub zog ncov, uas yog hais txog lub zog siab tshaj plaws uas lub inverter tuaj yeem tso tawm hauv lub sijhawm luv luv. Txij li thaum lub zog siab tshaj plaws tsuas tuaj yeem khaws cia rau lub sijhawm luv luv, nws tsis muaj qhov tseem ceeb siv ntau.

Hauv AC Circuit Court, cosine ntawm theem sib txawv (Ф) ntawm qhov hluav taws xob thiab tam sim no yog hu ua lub zog, uas yog sawv cev los ntawm lub cim cosФ. Nyob rau hauv cov nqe lus ntawm tus nqi, lub hwj chim yam yog qhov piv ntawm active zog rau pom lub zog, uas yog, cosФ{{0}}P / S. Feem ntau hais lus, lub zog ntawm cov khoom siv hluav taws xob xws li cov qhov muag teeb thiab cov cua sov ua haujlwm yog 1, thiab lub zog ntawm cov khoom siv hluav taws xob nrog cov khoom siv inductive feem ntau tsawg dua 1. Thaum lub zog ntawm cov khoom siv tsawg dua 0. 9, yuav raug nplua. Lub zog tsim tawm ntawm Sungrow inverter yog 1, thiab tuaj yeem hloov kho ntawm 0.8 ua thiab 0.8 lagging.

Lub zog tseem ceeb yog qhov teeb meem uas yuav tsum tau saib xyuas tshwj xeeb hauv kev lag luam thiab kev lag luam xa tawm cov phiaj xwm photovoltaic. Nws yuav tsum tau txiav txim siab los ntawm qhov system foundations. Tsis tsuas yog hom thiab qhov loj ntawm lub load yuav tsum tau txiav txim siab, tab sis kuj yog qhov kev ua tau zoo, cov ntsiab lus ntsuas thiab kev tswj cov txheej txheem ntawm cov khoom siv rov ua haujlwm. Nws raug nquahu kom ua raws li kev ua haujlwm ntawm tag nrho cov txheej txheem photovoltaic kom ntseeg tau tias lub zog siv hluav taws xob zoo li qub.

Lub inverter yog ib qho khoom siv nyob rau hauv qhov chaw nres tsheb photovoltaic uas hloov DC lub zog tsim los ntawm cov khoom siv rau hauv AC zog.

Nyob rau hauv tus txheej txheem ntawm hloov DC lub zog rau hauv AC lub zog, ib qho me me ntawm lub zog poob rau hauv daim ntawv ntawm tshav kub, yog li lub zog ntawm AC tso zis sab ntawm photovoltaic inverter yog tsawg dua lub zog ntawm DC input sab. Qhov piv ntawm cov zis hluav taws xob ntawm photovoltaic inverter ntawm AC kawg rau lub zog tawm tswv yim ntawm DC kawg yog hu ua kev hloov pauv kev ua haujlwm ntawm lub inverter.

Photovoltaic inverters nrog me me, lub teeb yuag thiab yooj yim installation txoj kev yeej ib txwm nyiam los ntawm cov neeg siv khoom. Qhov loj me thiab lub teeb yuag feem ntau txhais tau hais tias kev thauj mus los yooj yim, txo qhov kev pheej hmoo ntawm kev puas tsuaj ntawm lub tshuab thaum thauj. Txoj kev teeb tsa phab ntsa-mounted yog thawj qhov kev xaiv ntawm cov neeg siv khoom. Cov neeg siv khoom tsuas yog yuav tsum tau xyuas seb cov phab ntsa lossis qhov txuas txuas txuas puas yog qhov ruaj khov thiab txhim khu kev qha, txo cov neeg ua haujlwm thiab cov khoom siv ntawm kev teeb tsa.

Kev khiav hauj lwm qhov kub thiab txias kuj yog ib qho kev ntsuas uas txhua tus neeg yuav tsum tau them sai sai rau. Kev khiav hauj lwm kub ntawm lub inverter feem ntau qhia txog lub inverter lub peev xwm tiv taus qhov kub thiab txias thiab txiav txim siab lub neej ntawm lub inverter. Yog hais tias lub inverter muaj qhov dav ntawm qhov kub thiab txias, nws txhais tau hais tias lub inverter muaj peev xwm tiv taus qhov kub thiab txias thiab muaj kev ua tau zoo dua.

Feem ntau hais lus, photovoltaic inverters tau muab faib rau hauv tsev thiab sab nraum zoov siv. Cov neeg uas muaj kev tiv thaiv qis, feem ntau yog IP20 lossis IP23, yog siv rau sab hauv tsev thiab xav tau chav inverter tshwj xeeb. IP54 thiab IP65 ob leeg ua tau raws li cov qauv siv sab nraum zoov thiab tsis tas yuav muaj chav inverter.

Lus Cim: Koj tuaj yeem ruaj ntseg nruab ib lub inverter nrog IP65 tiv thaiv qib sab nraum zoov, tab sis koj yuav tsum ntxiv lub npog rau lub inverter, los yog nruab rau hauv qab lub eaves, los yog nruab rau ntawm lub bracket (hauv qab tivthaiv), thiab lwm yam. nws zam kev tshav ntuj ncaj qha, txo cov kev cuam tshuam ntawm ntau yam tsis zoo, thiab lav cov peev txheej rov qab los ntawm photovoltaic system thoob plaws hauv nws lub neej voj voog.

Ntau lub tuam txhab inverter muaj kev xav sib txawv ntawm txoj kev txias. Qee cov tuam txhab xav tias cov kiv cua tsis xav tau txhua, thaum lwm tus xav tias txhua qhov kev hloov pauv yuav tsum tau nruab nrog cov kiv cua.

Ob leeg ntawm cov lus no muaj lawv tus kheej vim li cas. Cov kiv cua yog ib feem siv tau. Yog tias siv rau lub sijhawm ntev, nws yuav raug puas tsuaj yooj yim, uas yuav txo qhov kev ruaj ntseg ntawm lub inverter thiab nce kev ua haujlwm thiab cov nqi tu.

Ntawm qhov tod tes, yog tias lub kiv cua tsis tau teeb tsa, qhov cua kub dissipation ntawm lub inverter yuav raug cuam tshuam, tshwj xeeb tshaj yog thaum qhov kub ntawm sab nraud ambient siab heev. Lub inverter tsis tuaj yeem dissipate cua sov hauv lub sijhawm, uas yuav cuam tshuam rau nws lub neej. Tau kawg, nyob rau hauv qee qhov xwm txheej, peb yuav tsum xav txog yuav ua li cas kom tsis txhob muaj kev cuam tshuam ntawm cua thiab xuab zeb ntawm cov khoom siv nrog cov kiv cua.